I think this counts as a "skill" or a "smart." Didn't people in the golden era relax with more grace and propriety? Or maybe they just never photographed each other sacked out on the couch in tatty socks and worn-out bathrobes? Whenever I've seen any images of folks taking it easy, they always look very proper. Take a look at these 1935 undergraduate students in their lounge:...
Lost art of proper relaxation
Lost art of proper relaxation